Thanks for quick response. The company is an agency company.

They have many clients and what I actually do is providing the analysis for clients.
If we use one of clients to sponsor h3visa and then next year use the current company to apply for
h1b visa. Is this practicable?

I am using full time CPT to work now. In fall term, the CPT can be only 20 hours a week. How should the company show in the payroll that the work hours are 20 hours? Should they pay half of my current salary?